Question: Which halogenated hydrocarbon has the lowest partition coefficient of water to octanol ?
Paraphrase: What halogenated hydrocarbon has the lowest partition coefficient of water to octanol?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q14333920 . ?ent wdt:P2993 ?obj . ?ent wdt:P31 wd:Q11173} ORDER BY ASC(?obj)LIMIT 5 
Answer: bromochloromethane